The obvious thing about going to bed at that time is that you won't wake up until noon. That might be part of a lifestyle for some people but I do not like that anymore as it destroys your biorhythm and leaves you with half of the day gone.
On the other side you might have a problem when you're inexperienced with staying up more than 18 hours at once. Because if you decide to stay up throughout the morning you'll have to keep it going until the following evening. What is just as bad as missing the first half of the day? Missing the second half. Or even most of the next night as well.
But once you are about to get out of your cycle or if it is already out of control, it is the best possibility to bring it back with one -- for your body terribly shocking -- night and day with out sleep. Because when you go to bed at the time you actually need to you will actually sleep. At least if you didn't use caffeine or anything alike to stay awake, they might actually get you into trouble in terms of sleep.
